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生物与环境平衡的危机
2023-12-06The history of life on earth has been a history of interaction between living things and their surroundings. To a large extent, the physical form and ...
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计算机病毒
2023-12-06The computer virus is an outcome of the computer overgrowth in the 1980s．The cause of the term "computer virus" is the likeness between the ...
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微机的结构
2023-12-06The Wonderful Structure of a Microcomputer In Chinese, a computer is popularly known as an " electrical brain", for the working process of a...
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AIR POLLUTION 空气污染
2023-12-06Sandstorms and the dust and gases from volcanoes pollute the earth's atmosphere naturally. But the most serious kind of air pollution comes from p...
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琥珀:通向过去的窗口 Amber: Window to the Past
2023-12-06Amber: Window to the Past 琥珀:通向过去的窗口Amber is a form of tree resin(琥珀是由树脂形成的) -- exuded as a protective mechanism against disease and insect infestatio...
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意大利的埃特纳火山
2023-12-06Mount EtnaSicily's greatest natural attraction is also its highest mountain. To the ancient Greeks, Mount Etna was the realm of Vulcan, god of fir...
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甲烷的危机
2023-12-06Deep trouble. Methane bubbles from a tar-covered oil seep in the Santa Barbara Channel.背景资料以往我们一听到温室效应，第一直觉都会联想到二氧化碳。但是越来越多的研究指出，甲烷对温室效应的影响，是超乎我们之前所想像...
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美国阿拉斯加北部海湾发生重大石油泄漏事故
2023-12-06Alaska's North Slope Sees Its Biggest Oil Spill Alaska officials said Friday that up to 267,000 gallons of crude oil poured out of a pipeline at t...
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发现大型南极冰下湖泊
2023-12-06Lost lakes.Two new lakes found under an Antarctic ice sheet rival Lake Vostok (pictured) in size.Credit: M. Studinger Frozen Land O' LakesBy Mas...
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月亮有多高
2023-12-06How High the Moon月亮有多高Tom Murphy wants to know how far it is to the moon. Not just how many miles, or how many feet, or even how many inches.Tom Murph...